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nessa1010
I dont know really know i just want to complete this stupid thing

The volume of a cube is = a^3 = 6^3= 216 cm^3

Mass of cube = 270 grams

The density of a cube = mass of cube / volume of cube = 270 / 216 = 1.25 g / cm^3

Thus if we have any thing with density more than 1.25 g /cm^3, the cube will float over it